No, they should not have reduced PT requirements. Just like gays should have to meet all the same standards as straight soldiers.
I'm not asking for the gays to get special treatment, I'm asking for them to get EQUAL treatment. i.e., the ability to be as open about their sexual preference in conversation with peers as heterosexual soldiers can be.
Now, IMO that should be "not at all." I don't think it should be standard practice in the military to drum up the macho factor or whatever by talking about all the bitches you've fucked or whatever.
But realistically soldiers will have those conversations, so I don't think a gay soldier should be kicked out of the military for having that conversation while a straight soldier is basically rewarded for those conversations as "being part of the team" or "building camaraderie" or whatever.